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Old 13th March 2007, 06:12 PM   #1
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Default Help!very Powerful Amp Needed!

I am building a subwoofer and i used a tda2050 parallel circuit to move it, and it comes out to be that it barely moves the speaker (which is 10" and about 200RMS). I need a really powerful amp, any suggestions?

I forgot, if possible it should work with +-70v or more, and it'd be nice if it had the pcb, cause i've tried to design some amp pcb with Protel and they didn't work out
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Old 13th March 2007, 06:43 PM   #2
Spirtos is offline Spirtos  Greece
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Hi,
look at: http://sound.westhost.com/projects-1.htm

or even : Power amp under development for quasi's design.
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Old 13th March 2007, 10:28 PM   #3
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the sound westhost one is nice, but there's no PCB. Does anyone have the pcb for those? cause like i said i tried doing pcb's with protel but they didn't come out right Plus the pcb has to be single sided!!
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Old 14th March 2007, 03:36 AM   #4
KISS is offline KISS  United States
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Budget? Have you thought about Class D? What's so freightning about double sided? Before computers, you used to "tape" layouts.
That was rough. A 6" x 6" board would be layed out on a 2' x 3' layers of velllum magnified. Fun. <G>.
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Old 14th March 2007, 10:17 AM   #5
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I'm curious why you think that you need to see the speaker move. If the room is small (as I suspect it is since you are using a 10" sub) you won't see a lot of movement at reasonable volumes. Does the sub seem like it keeps up with your mains?

Are you using the driver in a ported enclosure? That will keep excursion down.

Before going to a new amp, be sure that you are getting a good signal to your driver - stick a voltmeter across it and see what you get when you are trying to be loud. You may find that your receiver settings are not sending much signal to the sub.
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Old 14th March 2007, 11:58 PM   #6
fotios is offline fotios  Greece
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Default Re: Help!very Powerful Amp Needed!

Quote:
Originally posted by hernanstafe
I am building a subwoofer and i used a tda2050 parallel circuit to move it, and it comes out to be that it barely moves the speaker (which is 10" and about 200RMS). I need a really powerful amp, any suggestions?

I forgot, if possible it should work with +-70v or more, and it'd be nice if it had the pcb, cause i've tried to design some amp pcb with Protel and they didn't work out
Take a look in A powerFULL amplifier named Dirty Harry This one is enough? With slight modifications the power output could be decreased from 300Wrms/8 to 200Wrms/8. You need help? In your service always.
Fotios
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Old 15th March 2007, 12:32 AM   #7
fotios is offline fotios  Greece
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Default Re: Re: Help!very Powerful Amp Needed!

Quote:
Originally posted by fotios

Take a look in A powerFULL amplifier named Dirty Harry This one is enough? With slight modifications the power output could be decreased from 300Wrms/8 to 200Wrms/8. You need help? In your service always.
Fotios
O.K. i tell jokes. In this construction included two clean 170Wrms/8 channels with +/-60V supply. Are you in posetion to construct the one? It is very good and operate for two years without problems. Inform me to proceed in publishing of whole plans (schematic, layout, protections etc)
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Old 15th March 2007, 12:59 AM   #8
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Normally, subwoofers are ported, but there are sealed versions such as Bob Carver's units.

Will your sub be ported or unported?

Sealed units with passive radiators can be particularly effective!

Anyways, to answer your question regarding an amplifier, I would recommend THIS unit. It has plenty of power to driver a 10" driver and I argue that you cannot find a better deal.
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Old 15th March 2007, 01:30 AM   #9
Leolabs is offline Leolabs  Malaysia
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Try UcD kitsets too.
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